Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.

Pluto's big moon Charon may have a different origin story than scientists suspected. New research suggests the two bodies ...

This January is a stand-out month, with opportunities to see planets brighter than stars and our best chance to view Mars in ...

"The temperature just wildly swings from extremely hot to extremely cold," John Monnier, a professor of astronomy at the ...

Rep. Julie Fedorchak (R-ND) has urged Donald Trump to rescind 20 Biden administration regulations to advance the incoming administration’s energy agenda.

Earth spins as it orbits the Sun, and the solar system is orbiting the galactic center. So, if I go outside and look up, in ...

A rare four-planet conjunction will be visible most of this month as Venus, Jupiter, Saturn, and Mars light up the sky.

Billions of years ago, in the frigid outer reaches of our solar system, two icy worlds collided. Rather than destroying each ...

NASA has long been highly visible and is among the most celebrated programs in modern United States history. Some generations ...

Engaging articles, breathtaking images and expert knowledge Issues delivered straight to your door ...

Renewables supplied 71% of Portugal’s electricity in 2024, including 10% from solar, as production hit a record 36.7 TWh, according to grid operator Redes Energéticas Nacionais (REN).